——HRC——
C——Cr——Co——Cu——Mn——Mo——Ni——P——Si——S——W——V-HRC
0-1/0.85-1.00/0.40-0.60/*/*/1.00-1.40/*/0.30/*/0.50/*/*/0.30/57-62
W-1/0.70-1.50/0.15/*/*/0.10-0.40/0.10/0.20/*/0.10-0.40/*/0.50/0.10/57-64
A-2/0.95-1.05/4.75-5.50/*/*/1.00/0.90-1.40/0.30/*/0.50/*/*/0.15-0.50/57-62
D-2/1.4-1.6/11.00-13.00/*/*/0.60/0.70-1.20/0.30/*/0.60/*/*/1.10/57-61
M-2/0.95-1.05/3.75-4.5/*/*/0.15-0.4/4.75-6.5/0.3/*/0.2-0.45/*/5-6.75/2.25-2.75/60-65
W-2/0.85-1.50/0.15/*/*/0.10-0.4/0.10/0.20/*/0.10-0.40/*/0.15/0.15-0.35/57-64
L-6/0.65-0.75/0.60-1.2/*/*/0.25-0.8/0.50/1.25-2.0/*/0.50/*/*/0.20-0.30/57-62
1095/0.90-1.03/*/*/*/0.30-0.50/*/*0.04/*/0.05/*/*/57-62
5160/0.56-0.64/0.70-0.90/*/*/0.75-1.00/*/*/0.035/0.15-0.30/*/*/*/57-60
E52100/0.98-1.10/1.30-1.60/*/*/0.25-0.45/*/*/0.025/0.15-0.30/0.025/*/*/57-62
420/0.15/12.00-14.00/*/*/1.00/*/*/0.04/1.00/0.03/*/*/52-56
420MODIFIED/0.40-0.50/12.00-14.00/*/*/0.80/0.60/*/0.05/1.00/0.02/*/0.18/54-56
425MODIFIED/0.40-0.54/13.5-15/*/*/0.50/0.60-1.00/*/0.035/0.80/0.03/*/0.10/56-60
440A/0.65-0.75/16.00-18.00/*/*/1.00/0.75/*/0.04/1.00/0.03/*/*/55-57
440B/0.75-0.95/16.00-18.00/*/*/1.00/0.75/*/0.04/1.00/0.03/*/*/57-59！